There's an extension for deletion: https://nostr-nips.com/nip-09 https://nostr-nips.com/nip-09 And experimental support for editing. I am personally skeptica

There's an extension for deletion: https://nostr-nips.com/nip-09 https://nostr-nips.com/nip-09 And experimental support for editing. I am personally skeptical of these because once you've probably said something, you can ask people to ignore it but you can never really take it back. Still, there is support and most relays will honor your request.